12985577 has 4 divisors (see below), whose sum is σ = 14166096. Its totient is φ = 11805060.

The previous prime is 12985549. The next prime is 12985597. The reversal of 12985577 is 77558921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12985577 - 2¹⁰ = 12984553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12985597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590243 + ... + 590264.

It is an arithmetic number, because the mean of its divisors is an integer number (3541524).

Almost surely, 2^12985577 is an apocalyptic number.

It is an amenable number.

12985577 is a deficient number, since it is larger than the sum of its proper divisors (1180519).

12985577 is a wasteful number, since it uses less digits than its factorization.

12985577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180518.

The product of its digits is 176400, while the sum is 44.

The square root of 12985577 is about 3603.5506101621. The cubic root of 12985577 is about 235.0464794137.

It can be divided in two parts, 12 and 985577, that added together give a palindrome (985589).

The spelling of 12985577 in words is "twelve million, nine hundred eighty-five thousand, five hundred seventy-seven".